Conductive slip ring physically isolated by multilayer integral rotating labyrinth
By employing a multi-layered, integrated rotating labyrinth physical isolation structure and anti-electromagnetic interference materials, the insulation and electromagnetic interference problems between conductive slip ring loops are solved, achieving high reliability and safety and expanding application scenarios.
Patent Information
- Application Number
- CN202423125789.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-12-18
AI Technical Summary
Conventional conductive slip rings have poor insulation performance and short creepage distance due to the lack of insulation between loops, making them prone to discharge and electromagnetic interference, which affects equipment safety and application scenarios.
It adopts a multi-layered integrated rotating labyrinth physical isolation structure, forming a labyrinth gap through inner and outer isolation strips and sliding components to increase the creepage distance, and uses anti-electromagnetic interference materials to isolate each loop to form an independent chamber.
It improves the insulation performance and electromagnetic interference resistance of slip rings, enhances equipment safety and application range, and is particularly suitable for harsh environments such as aerospace and high-voltage, high-frequency scenarios.
Smart Images
Figure CN223612819U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of conductive slip ring, concretely relates to a multilayer integral type rotating labyrinth physical isolation's conductive slip ring. BACKGROUND
[0002] The conductive slip ring is widely used in all electromechanical systems requiring to provide unlimited, continuous or intermittent 360-degree rotation, to provide multi-channel rotating power, data and signals, which greatly simplifies the system structure and avoids the twist of the wire in the rotating process.
[0003] The conventional conductive slip ring structure has the following problems due to the fact that most of the space regions between the loops are not isolated by insulators:
[0004] (1) The creepage distance between the loops is short, the insulation performance is poor, and the insulation performance adaptability in the environment of humidity, low air pressure or vacuum, high voltage, etc. is poor;
[0005] (2) After the metal abrasion generated in the rotating process of the slip ring accumulates, the discharge phenomenon is easily generated between the loops with voltage difference, which seriously affects the safety of the equipment;
[0006] (3) The mutual electromagnetic interference phenomenon is easily generated between the loops;
[0007] The above problems seriously restrict the application scene of the slip ring and also affect the safety of the slip ring in use. UTILITY MODEL CONTENTS
[0008] The utility model aims at providing a multilayer integral type rotating labyrinth physical isolation's conductive slip ring to solve the problem of the fact that most of the space regions between the loops are not isolated by insulators in the background art.
[0009] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:
[0010] A multilayer integral type rotating labyrinth physical isolation's conductive slip ring, comprising a rotor and a stator, the rotor comprising a rotating shaft, a plurality of conductive loops fixedly arranged on the rotating shaft, and an inner isolation belt arranged between adjacent two conductive loops; the stator comprising a conductive brush matched with the conductive loop, a fixed wire plate for mounting the conductive brush, a dustproof shell matched with the fixed wire plate and arranged outside the rotating shaft, and an outer isolation belt fixedly arranged on the dustproof shell; the dustproof shell and the rotating shaft are connected through a bearing to form a conductive chamber, the inner isolation belt and the outer isolation belt are oppositely arranged and coaxially relatively rotate through a sliding assembly arranged on the opposite sides, the sliding assembly comprising a sliding member in the form of a ring and a sliding groove matched with the sliding member, and a labyrinth type cooperation gap is formed between the sliding member and the sliding groove; the conductive chamber is divided into independent chambers corresponding to each conductive loop through the outer isolation belt and the inner isolation belt.
[0011] Preferably, the sliding member comprises at least one non-axial main extension, at least one sub-extension arranged on the at least one main extension, and the included angle between the sub-extension and the corresponding main extension is not 0.
[0012] Preferably, the sliding member is arranged on the outer isolation belt, the inner isolation belt comprises two connecting rings arranged on both sides of the sliding member, and the two connecting rings are arranged to form a sliding groove in cooperation with one side of the sliding member.
[0013] Preferably, the outer isolation belt comprises a belt body and a positioning member arranged outside the belt body, the dustproof shell and / or the fixed wire plate are arranged to form a limiting portion in cooperation with the positioning member, the limiting portion and the positioning member form a sealing ring, and the depth of the limiting portion is the distance between the belt body and the dustproof shell.
[0014] Preferably, the positioning member is arranged opposite to the fixed wire plate, the fixed wire plate is arranged to form a side blocking strip for blocking the axial movement of the outer isolation belt in cooperation with the opposite positioning member, and the side blocking strip is fixedly connected to the inner side of the fixed wire plate.
[0015] Preferably, the dustproof shell is arranged to form a side blocking strip for blocking the axial movement of the outer isolation belt in cooperation with the positioning member, the limiting portion is arranged on the fixed wire plate, and the arc length of the limiting portion is not less than the arc length of the side blocking strip.
[0016] Preferably, the positioning member has two opposite positioning members, the dustproof shell is arranged to form a side blocking strip for each positioning member, the distance between the two adjacent side blocking strips is not less than the length of the positioning member, and the fixed wire plate has two opposite fixed wire plates, each of which is fixedly arranged with the limiting portion.
[0017] Preferably, the dustproof shell is arranged with an outer receiving groove at both ends, the rotating shaft is arranged with an inner receiving groove at both ends, and the two bearings are arranged between the inner receiving groove and the outer receiving groove at the same end.
[0018] Preferably, the rotating shaft is provided with a fixed groove, and the conductive loop is fixedly arranged in the fixed groove.
[0019] Compared with the prior art, the utility model has the beneficial effects that:
[0020] In the utility model, the outer isolation belt and the inner isolation belt are arranged on each conductive loop to realize overall space isolation, the sliding member and the sliding groove are arranged between the outer isolation belt and the inner isolation belt to form a labyrinth gap, the insulation isolation length and the creepage distance between the loops are greatly increased, the insulation reliability of the slip ring is realized, and the discharge phenomenon between the loops with voltage difference caused by the accumulation of abrasion powder in the process of rotating use of the slip ring can be resisted. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1A perspective view of the conductive slip ring of Example 1.
[0022] Figure 2 A perspective view of the conductive slip ring of Example 1. Figure 1
[0023] Figure 3 A perspective view of the conductive slip ring of Example 1. Figure 2
[0024] Figure 4 A perspective view of the conductive slip ring of Example 1. Figure 3
[0025] Figure 5 A perspective view of the conductive slip ring of Example 1.
[0026] Figure 6 A perspective view of the conductive slip ring of Example 1. Figure 5
[0027] A perspective view of the conductive slip ring of Example 1. Figure 7
[0028] A perspective view of the conductive slip ring of Example 1. Figure 8 Figure 7 A perspective view of the conductive slip ring of Example 1.
[0029] Figure 9 A perspective view of the conductive slip ring of Example 1.
[0030] Figure 10 Figure 9 A perspective view of the conductive slip ring of Example 1.
[0031] Figure 11 A perspective view of the conductive slip ring of Example 1.
[0032] Figure 12 A perspective view of the conductive slip ring of Example 1.
[0033] Figure 13 A perspective view of the conductive slip ring of Example 1.
[0034] Figure 14 A perspective view of the conductive slip ring of Example 1.
[0035] Figure 15 A perspective view of the conductive slip ring of Example 1. Figure 13
[0036] 1, rotating shaft; 2, conductive loop; 3, inner isolation belt; 4, conductive brush; 5, fixed wire plate; 6, dustproof shell; 7, outer isolation belt; 100, independent chamber; 8, sliding assembly; 81, sliding piece; 82, sliding groove; 800, matching gap; 300, connecting ring; 71, isolation belt body; 72, positioning piece; 73, limiting portion; 9, side blocking strip. DETAILED DESCRIPTION
[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application. Embodiment 1
[0038] Referring to Figure 1 A multi-layer integral rotating labyrinth physical isolation conductive slip ring, comprising a rotor and a stator, the rotor comprising a rotating shaft 1, a plurality of conductive loops 2 fixedly arranged on the rotating shaft 1, and an inner isolation belt 3 arranged between adjacent two conductive loops 2, and the stator comprising a conductive brush 4 matched with the conductive loop 2, a fixed wire plate 5 for installing the conductive brush 4, a dustproof shell 6 sleeved on the rotating shaft 1 and matched with the fixed wire plate 5, and an outer isolation belt 7 fixedly arranged on the inner side of the dustproof shell 6.
[0039] In the embodiment, the conductive brush 4 is provided with two and is arranged opposite to each other, and the fixed wire plate 5 is provided with left and right two corresponding to the conductive brush 4; the dustproof shell 6 is provided with a wire plate mounting groove for each of the two fixed wire plates 5, and the fixed wire plate 5 can be fixedly arranged in the wire plate mounting groove of the dustproof shell 6, and the dustproof shell 6 and the fixed wire plate 5 form an integral dustproof cover about the rotating shaft 1.
[0040] In the embodiment, the dustproof shell 6 is provided with an outer receiving groove at both ends, the rotating shaft 1 is provided with an inner receiving groove at both ends, and the two bearings are arranged between the inner receiving groove and the outer receiving groove at the same end, and the rotation connection between the dustproof shell 6 and the rotating shaft 1 is realized through the two bearings, and the dustproof shell 6 and the rotating shaft 1 form a conductive chamber in combination with the fixed wire plate 5 under the connection relationship of the bearings, and the conductive loop 2, the conductive brush 4, the inner isolation belt 3 and the outer isolation belt 7 are arranged in the conductive chamber.
[0041] Referring to Figures 2-3As shown, in the embodiment, the rotating shaft 1 is provided with a fixed groove, and three conductive loops 2 are fixedly arranged in the fixed groove at equal intervals, and each conductive brush 4 on the fixed wire plate 5 is arranged corresponding to the three conductive loops 2, and the arrangement relationship between the conductive loop 2 and the conductive brush 4 is known in the art, and will not be described here. The outer isolation band 7 and the inner isolation band 3 are both annular, the outer isolation band 7 is arranged on the outer side of the inner isolation band 3, and the conductive chamber is divided into three independent chambers by arranging two sets of isolation pairs composed of the inner isolation band 3 and the outer isolation band 7, and each conductive loop 2 is arranged in a separate chamber 100.
[0042] In the utility model, by setting the sealed independent chamber 100 for each conductive loop 2, the insulation performance of the conductive slip ring is guaranteed, and the adaptability of the insulation performance is good even in harsh environment, and in addition, the electromagnetic interference between the two loops can be isolated.
[0043] In the utility model, the sliding assembly 8 composed of the sliding part 81 and the sliding groove 82 is arranged between the outer isolation band 7 and the inner isolation band 3 in each isolation pair, and the coaxial relative rotation of the inner isolation band 3 and the outer isolation band 7 is realized; the sliding part 81 comprises at least one non-axial main extension part, at least one auxiliary extension part arranged on the at least one main extension part, and the included angle between the auxiliary extension part and the corresponding main extension part is not 0. In the utility model, the relative rotation of the inner isolation band 3 and the outer isolation band 7 is realized through the clearance fit of the sliding part 81 and the sliding groove 82, and the labyrinth type fit clearance 800 increases the creepage distance, preventing the occurrence of the creep phenomenon between the conductive loops 2.
[0044] Referring to Figure 4 As shown, in the embodiment, the sliding part 81 comprises a radially arranged main extension part and an axially arranged auxiliary extension part arranged on the main extension part. The sliding part 81 is annular and arranged on the inner side of the outer isolation band 7, and the sliding groove 82 is arranged on the outer side of the inner isolation band 3. The inner isolation band 3 is composed of two axially arranged connecting rings 300, and the two connecting rings 300 cooperatively form the sliding groove 82 on one side of the outer connecting ring 300. By arranging the inner isolation band 3 into two connecting rings 300 and cooperatively arranging the sliding groove 82 with the sliding part 81, the installation of the inner isolation band 3 and the outer isolation band 7 is facilitated, and the connecting ring 300 arranged on both sides of the sliding part 81 realizes the axial limiting of the outer isolation band 7, preventing the axial movement thereof. Of course, the sliding part 81 can also be arranged on the outer side of the inner isolation band 3, at this time, the sliding groove 82 is arranged on the inner side of the outer isolation band 7, and the person skilled in the art can arrange it according to the actual situation.
[0045] In this invention, the outer insulating strip 7 includes an insulating strip body 71 and a positioning member 72 disposed on its outer side along the circumferential direction of the insulating strip body 71. A dustproof housing 6 and / or a fixing plate 5 cooperate with the positioning member 72 to provide a limiting part 73. The limiting part 73 and the positioning member 72 cooperate to form a sealing ring, and its depth is the distance between the insulating strip body 71 and the dustproof housing 6, that is, the difference between the inner diameter of the dustproof housing 6 and the outer diameter of the insulating strip body 71. Thus, under the combined action of the inner insulating strip 3, the insulating strip body 71, and the sealing ring, a 360° seal can be achieved, thereby separating the conductive chamber to form an independent chamber 100.
[0046] like Figures 5-6 As shown, the positioning element 72 is strip-shaped and there are two of them, with the two positioning elements 72 arranged opposite each other; the dustproof housing 6 is provided with two limiting parts 73, and each limiting part 73 abuts against the corresponding side of the two positioning elements 72. Figures 7-8 As shown, the limiting part 73 can also be provided inside the fixing plate 5. For example... Figures 9-10 The positioning element 72 is strip-shaped and has four parts. Four limiting parts 73 are also provided to cooperate with the positioning element 72, and these four limiting parts 73 are respectively located on the dustproof housing 6 and the fixing plate 5. In this utility model, the number of positioning elements 72 can be one or more, and those skilled in the art can set it according to actual conditions. The number and installation position of the limiting parts 73 are determined by the positioning element 72.
[0047] In this embodiment, it should be noted that the outer isolation strip 7 is already axially positioned under the setting of the sliding component 8 and will not move back and forth relative to the inner isolation strip 3. Therefore, no other components are set here for axial positioning.
[0048] In this utility model, Figure 9 For example, the outer isolation belt 7 is assembled to the outside of the inner isolation belt 3 of the rotor through the sliding component 8. At this time, the inner isolation belt 3 and the outer isolation belt 7 cannot move back and forth relative to each other. The rotor equipped with the outer isolation belt 7 is inserted into the dustproof housing 6. At this time, the outer isolation belt 7 is fixed under the action of the positioning part 72 and the limiting part 73 and cannot rotate. After the rotor is connected to the dustproof housing 6 through the bearing, the two fixing wire plates 5 with the conductive brush 4 are fixedly installed in the left and right wire plate mounting slots respectively, forming a multi-layer integral rotating labyrinth physical isolation conductive slip ring. Example 2:
[0049] This embodiment improves upon embodiment 1 by further including an axial positioning component that restricts the axial movement of the outer isolation strip 7. The axial positioning component includes two side baffles 9 arranged opposite to each other. These side baffles 9 can be disposed inside the fixed plate 5. For example, when the outer isolation strip 7 is in the position... Figure 5 As shown, the assembly relationship is as follows: Figure 6As shown, two side bars 9 are arranged on the fixed wire plate 5 for each positioning member 72, so that the axial fixing of the outer isolation band 7 is realized; of course, the side bars 9 can also be arranged on the dustproof shell 6.
[0050] When the side bars 9 are arranged on the dustproof shell 6, the limiting part 73 is arranged on the fixed wire plate 5, and the arc length of the limiting part 73 is greater than or equal to the arc length of the side bar 9.
[0051] As shown in the embodiment, the outer isolation band 7 comprises an isolation band body 71 and two opposite positioning members 72 arranged on the outer side wall of the isolation band body 71, and a notch is arranged on the outer isolation band 7 at a position corresponding to the limiting part 73 for mounting the limiting part 73. Figure 11 As shown in the embodiment, the outer isolation band 7 comprises an isolation band body 71 and two opposite positioning members 72 arranged on the outer side wall of the isolation band body 71, and a notch is arranged on the outer isolation band 7 at a position corresponding to the limiting part 73 for mounting the limiting part 73. Figure 12 As shown in the embodiment, the outer isolation band 7 comprises an isolation band body 71 and two opposite positioning members 72 arranged on the outer side wall of the isolation band body 71, and a notch is arranged on the outer isolation band 7 at a position corresponding to the limiting part 73 for mounting the limiting part 73. Figure 13 As shown in the embodiment, the outer isolation band 7 comprises an isolation band body 71 and two opposite positioning members 72 arranged on the outer side wall of the isolation band body 71, and a notch is arranged on the outer isolation band 7 at a position corresponding to the limiting part 73 for mounting the limiting part 73.
[0052] In the utility model, no matter whether the outer isolation band 7 can be axially fixed through the sliding assembly 8, the axial positioning and mounting assembly can axially fix the outer isolation band 7, and the application range is expanded.
[0053] For example, referring to the drawings, Figure 14 When the sliding member 81 comprises a radially arranged main extension part and two axially arranged auxiliary extension parts, the main extension part is arranged corresponding to the inner side edge of the outer isolation band 7, the cross section of the sliding member 81 is inverted F-shaped, and the cross section of the outer side of the inner isolation band 3 is reversely F-shaped, so as to form a sliding groove 82 matched with the sliding limiting member. Figure 15As shown, during the insertion process, the positioning member 72 in the outer isolation band 7 should correspond to the fixing wire plate 5 installation slot; after being inserted into the corresponding position, rotating the rotor makes each positioning member 72 arranged between the front and rear two blocking strips of the corresponding axial positioning installation assembly, completing the axial fixation of the outer isolation band 7; after connecting the rotor with the dustproof shell 6 through the bearing, fixing the two fixed wire plates 5 with the conductive brush 4 in the upper and lower wire plate installation slots, at this time, the limiting part 73 arranged on the inner side of the fixed wire plate 5 is arranged between the two positioning members 72 to abut against the positioning member 72 to limit the rotation of the outer isolation band 7, and the limiting and the positioning member 72 cooperate to form a 360° isolation ring, and the isolation pair cooperates to realize the separation of the conductive cavity.
[0054] Further, the inner isolation band and the outer isolation band are made of an anti-electromagnetic interference material.
[0055] Compared with the problem that there is no isolation between the loops in the traditional conductive slip ring, which causes the electromagnetic interference phenomenon between the loops, on the basis of using the inner isolation band and the outer isolation band for isolation, the isolation band is limited to be made of an anti-electromagnetic interference material, so that the anti-electromagnetic interference ability between the cavities is improved, and even the high-frequency loops and the high-voltage loops also have good anti-electromagnetic interference ability.
[0056] In the utility model, the 360-degree labyrinth physical isolation slip ring structure of the conductive slip ring is uniquely and ingeniously designed by a rotating process, greatly simplifies the processing and installation difficulty of the isolation cavity, reduces the cost, and the structure can be used for multi-cavity structure design of the slip ring, solves the installation and processing problems of the 360-degree closed cavity, greatly improves the product process feasibility, thereby increases the product reliability and safety, and greatly enhances the environmental range of the slip ring application, especially in the fields of aerospace, high voltage and high frequency.
Claims
1. A multi-layered integral rotating labyrinth-physically isolated electrically conductive slip ring comprising a rotor and a stator, characterized in that, The rotor comprises a rotating shaft, a plurality of conductive loops fixedly arranged on the rotating shaft, and an inner isolation belt arranged between two adjacent conductive loops; the stator comprises conductive brushes matched with the conductive loops, a fixed wire plate for mounting the conductive brushes, a dustproof shell matched with the fixed wire plate and arranged outside the rotating shaft, and an outer isolation belt fixedly arranged on the dustproof shell; the dustproof shell and the rotating shaft are connected through bearings to form a conductive chamber, the inner isolation belt and the outer isolation belt are arranged oppositely and coaxially rotate oppositely through sliding assemblies arranged on opposite sides, the sliding assemblies comprise annular sliding members and sliding grooves matched with the sliding members, and a labyrinth gap is formed between the sliding members and the sliding grooves; the conductive chamber is divided into independent chambers corresponding to the conductive loops through the outer isolation belt and the inner isolation belt.
2. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as claimed in claim 1, wherein, The sliding member comprises at least one main extension part arranged non-axially, and at least one auxiliary extension part arranged on the at least one main extension part, and an included angle between the auxiliary extension part and the corresponding main extension part is not 0.
3. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as claimed in claim 2, wherein, The sliding member is arranged on the outer isolation belt, the inner isolation belt comprises two connecting rings arranged on both sides of the sliding member, and the two connecting rings are matched to form the sliding groove on the side close to the sliding member.
4. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as claimed in any one of claims 1 to 3, wherein, The outer isolation belt comprises a belt body and a positioning member arranged outside the belt body, the dustproof shell and / or the fixed wire plate are matched with the positioning member to arrange a limiting part, the limiting part and the positioning member are matched to form a sealing ring, and a depth of the limiting part is a distance between the belt body and the dustproof shell.
5. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as defined in claim 4, wherein, The positioning member is arranged oppositely to the fixed wire plate, the fixed wire plate is matched with the opposite positioning member to arrange a side blocking strip for blocking axial movement of the outer isolation belt, and the side blocking strip is fixedly connected to the inner side of the fixed wire plate.
6. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as defined in claim 4, wherein, The dustproof shell is matched with the positioning member to arrange a side blocking strip for blocking axial movement of the outer isolation belt, the limiting part is arranged on the fixed wire plate, and an arc length of the limiting part is not less than an arc length of the side blocking strip.
7. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as defined in claim 5, wherein, The positioning member has two and is arranged oppositely, the dustproof shell is matched with each positioning member to arrange a side blocking strip; a distance between two adjacent side blocking strips is not less than a length of the positioning member; and the fixed wire plate has two and is arranged oppositely, and each fixed wire plate is fixedly arranged with the limiting part.
8. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as defined in claim 1, wherein, The dustproof shell has outer receiving grooves arranged at both ends, the rotating shaft has inner receiving grooves arranged at both ends, and two bearings are arranged between the inner receiving grooves and the outer receiving grooves at the same end.
9. A multi-layered monolithic rotating labyrinth physically isolated conductive slip ring as defined in claim 1, wherein, The rotating shaft is provided with a fixed groove, and the conductive loop is fixedly arranged in the fixed groove.